getJpegProcess

this gives information about the process used to create the JPEG file. Possible values are:

• '0' Unknown
• '192' Baseline
• '193' Extended sequential
• '194' Progressive
• '195' Lossless
• '197' Differential sequential
• '198' Differential progressive
• '199' Differential lossless
• '201' Extended sequential, arithmetic coding
• '202' Progressive, arithmetic coding
• '203' Lossless, arithmetic coding
• '205' Differential sequential, arithmetic coding
• '206' Differential progressive, arithmetic codng
• '207' Differential lossless, arithmetic coding